Graphium glycerion, the spectacle swordtail, is a species of butterfly found in the Indomalayan realm (northern India, China, Thailand, Laos and northern Vietnam). The species was first described by George Robert Gray in 1831.
It may be a synonym of Graphium mandarinus Collins & Morris. It is however treated as a "good species" by Koiwaya. A further problem is that the name glycerion is permanently invalid as a junior primary homonym of Papilio glycerion Borkhausen, 1788.
Graphium glycerion is very little known and as with Graphium mandarinus, G. tamerlanus, G. phidias and G. olbrechtsi few specimens exist.